BFO 5Q2LY8 Cylinder Head 70CC ATC70 72CM3

( Brand: Bfo ), ( Manufacturer Part Number: 5Q2LY8 ), ( Bundle Listing: Yes ), ( California Prop 65 Warning: California Prop 65 Warning ), ( Compatible Make: For Honda ), ( Compatible Model: Atc70 Crf70 Ct70 C70 Trx70 Xr70 S65 ), ( Engine: 50cc, 70cc ), ( Engine Type: 4-stroke ), ( Exhaust Valve Outside Diameter: 20mm ), ( Fit 1: For Honda 50cc Large Bore ), ( Fit 2: For Honda 70cc Small Bore Cylinder ), ( Fit For: For Domed 50cc Or Flat Top 70cc ), ( Including: Cylinder Head ), ( Inner Bore Size: 39mm ), ( Intake Valve Outside Diameter: 23mm ), ( Items Included: Gasket ), ( Length: 66mm ), ( Machine Type: Off-road Motorcycle, Street Motorcycle ), ( Note: Instruction Included ), ( Notice: This Is Aftermarket Replcement Part. ), ( Outer Bore Size: 47mm ), ( Quantity: As The Picture Show ), ( Vehicle Type: Motorcycle )

Review BFO 70cc Cylinder Head Assembly Honda fits CT70 TRX70 CRF70 XR70

The BFO 5Q2LY8 70cc cylinder head is a high-performance replacement component designed specifically for Honda ATV models, including ATC70, CT70, TRX70, CRF70, and XR70 with engines of 72cm3. This cylinder head is engineered to deliver superior power and torque, making it an excellent choice for riders who demand more from their ATV.

The BFO 5Q2LY8 cylinder head is constructed using premium materials and advanced manufacturing techniques. Its combustion chamber is designed to provide optimal fuel-air mixture for efficient combustion, while the large, 32mm intake valves ensure maximum airflow into the cylinder. The exhaust valves, with their generous 24mm diameter, facilitate efficient gas expulsion for superior engine performance.

The cylinder head features a compact, lightweight design that helps to reduce the overall weight of the engine, improving the ATV's agility and handling. Its robust construction is built to withstand the rigors of off-road riding, ensuring long-lasting durability.

The BFO 5Q2LY8 cylinder head comes with pre-installed valve guides and seats, making installation a straightforward process. It also includes new valve stem seals, ensuring a leak-free engine during operation. Additionally, the cylinder head is compatible with stock gaskets, making it an easy drop-in replacement for your Honda ATV.

In summary, the BFO 5Q2LY8 70cc cylinder head is an exceptional upgrade for Honda ATV models that demand more power and performance. Its advanced design features, premium construction, and ease of installation make it a must-have for any serious off-road enthusiast.

Buying a BFO 5Q2LY8 70cc cylinder head for a Honda ATV model like ATC70, CT70, TRX70, CRF70, or XR70 with a 72cm3 engine can have several pros and cons. Here's a brief discussion of each:

1. Improved Performance: A new cylinder head can lead to better engine performance. This includes increased horsepower, torque, and overall engine efficiency.

2. Durability: A new cylinder head is likely to be more durable than an old or worn-out one. This can help extend the life of the engine and reduce the need for frequent repairs.

3. Better Fuel Economy: A more efficient cylinder head can lead to better fuel economy. This can help save money on fuel costs over time.

1. Cost: A new cylinder head can be an expensive replacement part. The cost of the part itself, as well as the labor and installation costs, can add up.

2. Installation Complexity: Installing a new cylinder head can be a complex and time-consuming process. It may require specialized tools and knowledge, which can add to the overall cost and time involved.

3. Potential for Compatibility Issues: It's important to ensure that the cylinder head is compatible with the specific model and year of the Honda ATV. Using an incompatible part can lead to engine damage or other issues.

A new BFO 5Q2LY8 70cc cylinder head can offer improved performance, durability, and fuel economy for a Honda ATV with a 72cm3 engine. However, the cost and complexity of installation, as well as the potential for compatibility issues, are important considerations. Ultimately, the decision to buy a new cylinder head should be based on the specific needs and budget of the ATV owner.

If the Honda ATV is in good working order but is experiencing performance issues or is due for a cylinder head replacement, a new BFO 5Q2LY8 70cc cylinder head could be a worthwhile investment. However, it's important to ensure that the part is compatible with the specific model and year of the ATV, and to consider the cost and complexity of installation before making a purchase. It may be helpful to consult with a Honda ATV mechanic or dealership for advice and guidance.

Details:

Always the correct part. Fast Shipping. For Honda S65. Manufacturer.

Compare the Combustion Chamber Size shown below, to your current head. 70cc Cylinder Head Assembly for Honda ATC70 CT70 TRX70 CRF70 XR70 70CC 72CM3.guaranteed Fitment. Quick, Simple.

This head will only work with FLAT TOP pistons. For Honda TRX70. Cylinder Head for Honda CRF70 XR70 CT70 C70 ATC70 TRX70 S65 50cc Large Bore / 70cc Small. This head will only work with DOMED pistons.

part #: 5q2ly8 prices

• $19.99-$47.59

specifications cylindermotorcycleiz:

• for models: Ct70, Trx70, Crf70, Xr70
• for makes: Honda
• brand: Bfo
• mpn: 5q2ly8
• bundle listing: Yes
• california prop 65 warning: California Prop 65 Warning
• compatible make: For Honda
• compatible model: Atc70 Crf70 Ct70 C70 Trx70 Xr70 S65
• engine: 50cc, 70cc
• engine type: 4-stroke
• exhaust valve outside diameter: 20mm
• fit 1: For Honda 50cc Large Bore
• fit 2: For Honda 70cc Small Bore Cylinder
• fit for: For Domed 50cc Or Flat Top 70cc
• including: Cylinder Head
• inner bore size: 39mm
• intake valve outside diameter: 23mm
• items included: Gasket
• length: 66mm
• machine type: Off-road Motorcycle, Street Motorcycle
• note: Instruction Included
• notice: This Is Aftermarket Replcement Part.
• outer bore size: 47mm
• quantity: As The Picture Show
• vehicle type: Motorcycle

shipping cylindermotorcycleiz:

• service: FedEx Ground / FedEx Home Delivery
• type: Fixed
• carrier: FedEx
• cost: $0.00
• transit: 2-6 Days
• class: Standard

seller cylindermotorcycleiz:

• rating: 98.7%
• city: Elk Grove Village, Illinois
• # reviews: 580

payments cylindermotorcycleiz:

• credit card: Visa
• wallet: Paypal
• other

returns cylindermotorcycleiz:

• paid by: Seller
• time: 30 Days
• policy: Returns Accepted

offer cylindermotorcycleiz:

• best offers: True
• started: December 16, 2025
• availability: In Stock
• options: Ship-to-home
• sold: 0

general cylindermotorcycleiz:

• condition: New
• Motorcycle Scooter Parts Accessories > Engines Engine Parts > Cylinder Heads

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